JPS59216078A - Visitor annunciator - Google Patents

Abstract

PURPOSE:To facilitate installation and maintenance control after the installation by connecting a detection part to an annunciation part on radio basis, and using a secondary battery charged by a photocell as a power source. CONSTITUTION:An intruder detecting circuit 11 monitors the amount of infrared- ray energy radiated from a warning area set on the floor surface, etc., in front of the entrance all the time. Then, when a moving body enters the warning area and the resulting variation in the amount of infrared-ray energy is detected, a radio transmitting circuit 2 transmits its signal to the annunciation part by radio. On the other hand, the secondary battery 3 which powers on the intruder detecting circuit 1 and radio transmitting circuit 2 is charged by the photocell 4, and a diode 6 prevents the current from the secondary battery 3 to the photocell 4 from flowing reversely. Further, a phototransistor 5 detects the illuminance of the circumference of the detection part to control the flickering of a illumination lamp, etc.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a visitor alarm device that automatically notifies indoor users of the presence of a visitor at the entrance or the like by means of a chime or the like.

Generally, visitor alarms include a detection unit that detects the presence or absence of visitors;
It is composed of an alarm unit that controls the operation of alarm chimes and lights off alarms, and a detection unit that includes an intruding object detection circuit that detects the intrusion of an object into a predetermined warning area, and an intruding object detection circuit. and a transmitting circuit that transmits an alarm signal to the alarm unit when it detects a visitor. The function of a visitor alarm is to not only sound an alarm chime when a visitor rarely arrives, but also to activate a television monitor to monitor the presence of a visitor at the entrance, and to issue an alarm if the visitor is deemed to be a friendly or malicious intruder. One possibility is to sound the buzzer.

It is also conceivable to turn on lights at night to illuminate the steps of visitors, and to similarly give a psychological shock to malicious intruders to repel them.

By the way, there are many visitor detectors that sound a chime tube when a visitor passes between infrared transducers installed at the front of a store and blocks the infrared beam, but this type of visitor detector Since things are usually installed indoors, it is relatively easy to distribute them bυ.

Discharge test, ((The department and notification department were integrated for 1 hour,
Providing power from the power source! It was also extremely easy to receive 0. However, when it is installed at the entrance of a general house, for example, the alarm part and the detection part are installed separately outside the house. As a result, the wiring work was often incorrect.

This invention is based on the above, and is a device in which the detection part and the notification part are made by different people, and the two people are connected wirelessly, so that it can be done easily by both the contractor and the technician. It is. In addition, to facilitate KH maintenance after installation, we have adopted an infrared moving object detection circuit with low power consumption as the intruding object detection circuit, and the power supply for this infrared moving object detection device and wireless transmission circuit. A secondary battery is added as a secondary battery, and a photovoltaic cell such as a solar cell is added to charge this secondary battery, and a rectifying element such as a diode or transistor is installed to prevent reverse current flow between the secondary battery and the photovoltaic battery. It is something that has been mediated.

The present invention will be described in detail below based on the illustrated embodiment. FIG. 1 is a diagram showing an embodiment of a visitor detector according to the present invention. The intruding object detection circuit 1 is an infrared type S moving object detection device that detects the intrusion of a moving object by utilizing the fact that all objects at room temperature emit far infrared rays according to their temperature. A monitoring area is set on the floor of the building, and the infrared energy emitted from this monitoring area is
' is constantly monitored using a photodetector such as a thermoelectric stack, and f+11
The heat ray transmitting circuit 2 detects the fluctuation in the amount of infrared energy caused by the intrusion of an object into the warning area.The intruding object detection circuit 1 detects the fluctuation in the amount of infrared energy, and its output circuit is turned on. When the pulse train has a preset shape.

For example, during a preset time depending on the day and night distinction,
A secondary battery 3 such as a nickel-cadmium battery supplies power to the intruding object detection circuit 1 and the wireless transmission circuit 2, and a secondary battery 3 such as an amorphous solar battery supplies power to the intruding object detection circuit 1 and the wireless transmission circuit 2. The infrared 5rRh object detection device charged by the photocell 4 has so little power that it can operate even at 2 to 10 μA and 3.6V, so even if the secondary battery 3 and photocell 4 are small, they are stable for a long time. It works well and is cheap in terms of price. 5 is a lid that detects the illuminance around the detection unit.
When the collector current is above a certain value, that is, when the illuminance is above a certain value, it is considered to be daytime, and conversely, when it is less than that, it is considered to be night, and the illuminance is controlled such as flashing and blinking of the lighting. ing. The diode 6 is for preventing current from flowing backward from the secondary battery 3 when the voltage generated by the solar cell 40 becomes lower than the voltage of the secondary battery 3. Although not shown, the notifying unit determines whether the pulse train from the transmitting circuit has a predetermined shape, and also simultaneously checks the length of the transmission time to determine whether it is day or night. It controls alarms, flashing lights, etc.

2 and tE3 also show an embodiment of the visitor alarm according to the present invention, in which 1 is an intruding object detection circuit, 2 is a wireless transmission circuit, 3 is a secondary battery, and 4 is a solar battery. and the solar cell 4.
but! It is an I-flow element. 7 is an I-'NP) transistor,
The emitter electrode E is connected to the anode side of the solar cell 4, and the base electrode B is connected to the anode side of the secondary battery 3. 5 and 7' are NPN) transistors, whose emitter electrode E is connected to the cathode side of the solar cell 4, and whose base electrode B is connected to the 2
They are connected to the first side of the next battery 3, respectively.

According to the above structure, when sunlight is strongly irradiated and the solar cell 4 is generating sufficient power, the current is the emitter current iE and the base 'F! of the transistor. ! The secondary battery 3 is charged through iB or through the pace electrode B and emitter electrode E of the transistor 7', and conversely, the irradiation of sunlight is weak and the voltage of the solar battery 40 is lower than the voltage of the secondary battery 3.
When the generated voltage is low, the rectifying effect between the emitter 1uiE of the transistor 7, 7' and the base m pole B prevents the stain current from flowing back from the secondary battery 3 to the solar cell 4. Therefore, consumption of the secondary battery 3 is prevented.

As described in detail above, the present invention connects the detection section and the notification section wirelessly, which eliminates the need for wiring and simplifies the installation work. Since it can be selected, it is easy to change the luxury area, and the alarm part can also be activated when family members move, so the range of practical applications of this type of device has been greatly improved. In addition, the infrared moving object detection device in the detection unit consumes extremely little power, so it can operate stably for a long time using a small and low-cost secondary pond and solar cells, making maintenance and management after installation extremely easy. etc. 1 The effects of the present invention are remarkable.

[Brief explanation of the drawing]

1 to 3 are diagrams showing one embodiment of the present invention, and FIG. 1 shows that when a diode is used as a rectifying element,
This figure and FIG. 3 are diagrams showing the case where transistors are used. 1... Infrared moving object detection device 2... Wireless transmission circuit 3... Secondary battery 4... Solar cell 5... Photo transistor 6... Diode 7... PNP transistor 7'・・・NPN) Transistor patent author Optex Co., Ltd.

Claims (1)

[Claims] Fluctuations in the amount of infrared energy emitted from a predetermined warning area) 5-Detect, v! An infrared moving object detection device that detects moving objects entering the J-Kai area. and a detection section consisting of a wireless transmission circuit that receives the output from the infrared moving object detection device and outputs an alarm signal, and an alarm that receives the alarm signal from the detection section and controls the operation of an alarm such as an alarm chime. a secondary battery for supplying power to the electronic circuit of the detection unit, a photovoltaic cell for charging the secondary battery, and a rectifying element connected between the secondary battery and the photovoltaic cell. A visitor alarm characterized by comprising: